【Purpose/significance】This paper chooses the library microblog in the northeast of China as objects and adopts the social network analysis method to establish the social network structure through the "concerned" relationship among these libraries.【Method/process】Based on the matrix analysis of the attention relationship between these libraries, combined with UCINET software, we analyzed the construction of the microblog network in the northeast area of our country from the perspective of community graph, network density,centrality and agglomeration.【Result/conclusion】Finally, according to the results of the study, the paper summarizes the current situation of the construction of Weibo in the northeast region and puts forward the construction suggestions.